Black Ox statue

So i've got a few questions regarding my Black Ox statue which i've not been able to work out my self yet, does the Guard it applies only happen if i do the damage in one hit, or is it total over any amount of hits, is it possible for the statue to cast guard on the caster aswell? Normally in a raid or dungeon where should I place it, by me and the other tank for a raid, and by me for a dungeon?

every time you do a total of 1600% of your attack power in damage. It's impossible to do 16 times as much damage as your attack power including vengeance in one hit.

It explicitly says that it will not place a Guard on you.

Place it in the center of a boss room, or in between you and the ranged, so that it is in range of everybody. Alternatively, place it where AoE adds will spawn, so you can attempt to do your AoE taunt.

What is our AoE taunt? I thought the taunt we can have from our statue was single target?

Targeting your statue and using Provoke will do an AoE taunt centered on the statues location. So if your doing a fight where you know AoE taunting adds is needed make sure to place it in a central location to the add spawns or on the Ranged DPS/Heal pile to pull mobs off them.

The four elements, like man alone, are weak. But together they form the strong fifth element: Boron.

Targeting your statue and using Provoke will do an AoE taunt centered on the statues location. So if your doing a fight where you know AoE taunting adds is needed make sure to place it in a central location to the add spawns or on the Ranged DPS/Heal pile to pull mobs off them.

A good example of this is General Pa'valak in Siege of Niuzao Temple. You can place the statue just up the hill a bit and taunt the adds from the totem.

How does the statue work with a monster attacking it then, does it have a set amount of hp, or is it immune to damage while the monster is hitting it?

It has a set amount of HP.

One trick I like to use in dungeons is to put the statue in the middle of a pack of mobs. The will move towards it and start attacking, then I roll in, makes it easy to land keg smash on all of them and get agro on all the mobs.

Something that people have not mention about Statue placement here is that you can use it as a target for your L30 talents, whilst you should not be using your chi on heals as a rule, there will be times where it is more beneficial to the raid, in these cases you can place your statue behind the raid and target it for a Chi Burst that will hit most of the raid, this can be very nice burst healing in clutch situations on harder content.